Results 21 to 30 of about 879,817 (289)

Estimando o retorno à educação do Brasil considerando a legislação educacional brasileira como um instrumento

open access: yesBrazilian Journal of Political Economy, 2012
Estimating the return to education the Brazilian legislation of education as an instrument considering. This paper aims to estimate the impact of education on wages in Brazil.
Wladimir Machado Teixeira   +1 more
doaj   +1 more source

Determinantal Generalizations of Instrumental Variables

open access: yesJournal of Causal Inference, 2018
Linear structural equation models relate the components of a random vector using linear interdependencies and Gaussian noise. Each such model can be naturally associated with a mixed graph whose vertices correspond to the components of the random vector.
Weihs Luca   +8 more
doaj   +1 more source

Orthogonal Polynomials for Seminonparametric Instrumental Variables Model [PDF]

open access: yes, 2014
We develop an approach that resolves a {\it polynomial basis problem} for a class of models with discrete endogenous covariate, and for a class of econometric models considered in the work of Newey and Powell (2003), where the endogenous covariate is ...
Kovchegov, Yevgeniy, Yildiz, Nese
core   +3 more sources

Mendelian randomization analyses in ocular disease: a powerful approach to causal inference with human genetic data

open access: yesJournal of Translational Medicine, 2022
Ophthalmic epidemiology is concerned with the prevalence, distribution and other factors relating to human eye disease. While observational studies cannot avoid confounding factors from interventions, human eye composition and structure are unique, thus,
Jiaxin Li   +7 more
doaj   +1 more source

Estimation of the Heteroskedastic Canonical Contagion Model with Instrumental Variables. [PDF]

open access: yesPLoS ONE, 2016
Knowledge of contagion among economies is a relevant issue in economics. The canonical model of contagion is an alternative in this case. Given the existence of endogenous variables in the model, instrumental variables can be used to decrease the bias of
André L P Ribeiro, Luiz K Hotta
doaj   +1 more source

The impact of credit accessibility on rural households clean cooking energy consumption: The case of Ghana

open access: yesEnergy Reports, 2020
This study examined the impact of credit received on rural household clean cooking energy consumption. The study pays more attention to clean energies, such as liquefied petroleum gas (LPG) and kerosene. Due to the endogenous issue of credit, we employed
Martinson Ankrah Twumasi   +4 more
doaj   +1 more source

Unbiased Instrumental Variables Estimation Under Known First-Stage Sign [PDF]

open access: yes, 2015
We derive mean-unbiased estimators for the structural parameter in instrumental variables models with a single endogenous regressor where the sign of one or more first stage coefficients is known.
Andrews, Isaiah, Armstrong, Timothy B.
core   +8 more sources

Heart Rate Variability Control Using a Biofeedback and Wearable System

open access: yesSensors, 2022
Heart rate variability is an important physiological parameter in medicine. This parameter is used as an indicator of physiological and psychological well-being and even of certain pathologies.
Eduardo Viera   +2 more
doaj   +1 more source

Two-stage least squares model averaging for instrumental variable models with exogenous variables

open access: yesStatistical Theory and Related Fields
Instrumental variable (IV) methods are widely used to address unmeasured confoundings in structural equation models. In this paper, we focus on the settings where a possibly large number of instruments and a weak correlation between the instruments and ...
Wenjun Shen, Xiaochao Xia
doaj   +1 more source

Causal Transmission in Reduced-Form Models

open access: yesEconometrics, 2022
We propose a method to explore the causal transmission of an intervention through two endogenous variables of interest. We refer to the intervention as a catalyst variable.
Vassilios Bazinas, Bent Nielsen
doaj   +1 more source

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